All this talk about black/white synths, and I've overlooked the rare and eccentric albino synths, like Tony Mason's Pink Casio SK1, about which he knows nothing (other than wondering if it was a Barbie special edition). Even better,
The Smithsonian has an ultra-rare pre-release white Speak & Spell.

The AX_73, which was rather Clinical and Medical in appearance... and they also made the Ultra-Rare and very hard to find VX-600, and after looking at this baby you can clearly see where Access got their TI Series Color and Industrial Design Cues: